SINOTECH Company Limited SINOTECH Company Limited (688737.SS), founded in 2005 and headquartered in Chengdu, China, engages primarily in the research, development, production, and sales of new materials and new energy technologies, with a focus on environmentally friendly catalysts and related systems. The company offers a range of core products including internal combustion engine exhaust gas purification catalysts such as three-way catalysts (TWC) for gasoline vehicles, selective catalytic reduction (SCR) catalysts for diesel engines, catalyzed diesel particulate filters (CDPF), and catalysts for natural gas vehicles, motorcycles, and ships; after-treatment systems and industrial exhaust gas purifiers for volatile organic compounds (VOCs); hydrogen fuel cell electrocatalysts; and energy storage and power battery solutions like the ZT-B5NLVI, ZT-B77NHVI battery modules, and ZT-ESS-D100kW/215kWh outdoor energy storage cabinets. Its operations target automotive, industrial, and energy sectors primarily in China, serving vehicle manufacturers, retrofit markets for in-use emissions control, and emerging hydrogen and battery applications. Formerly known as Sinocat Environmental Technology Co Ltd, the company listed on the Shanghai Stock Exchange's Science and Innovation Board in 2021 and continues to expand its portfolio amid China's pollution control and carbon reduction initiatives.